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authorJeremy Fitzhardinge <jeremy@goop.org>2008-05-27 02:31:28 +0400
committerThomas Gleixner <tglx@linutronix.de>2008-05-27 12:11:38 +0400
commit359cdd3f866b6219a6729e313faf2221397f3278 (patch)
treeec052599c175ee1ef0a2221670f18f6dad95cc77
parent0e91398f2a5d4eb6b07df8115917d0d1cf3e9b58 (diff)
downloadlinux-359cdd3f866b6219a6729e313faf2221397f3278.tar.xz
xen: maintain clock offset over save/restore
Hook into the device model to make sure that timekeeping's resume handler is called. This deals with our clocksource's non-monotonicity over the save/restore. Explicitly call clock_has_changed() to make sure that all the timers get retriggered properly. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/xen/time.c8
-rw-r--r--drivers/xen/manage.c15
-rw-r--r--include/xen/xen-ops.h3
3 files changed, 12 insertions, 14 deletions
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 0bef256e5f2d..c39e1a5aa241 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -572,14 +572,6 @@ void xen_setup_cpu_clockevents(void)
clockevents_register_device(&__get_cpu_var(xen_clock_events));
}
-void xen_time_suspend(void)
-{
-}
-
-void xen_time_resume(void)
-{
-}
-
__init void xen_time_init(void)
{
int cpu = smp_processor_id();
diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c
index ba85fa2cff33..675c3dd23962 100644
--- a/drivers/xen/manage.c
+++ b/drivers/xen/manage.c
@@ -34,14 +34,21 @@ static enum shutdown_state shutting_down = SHUTDOWN_INVALID;
static int xen_suspend(void *data)
{
int *cancelled = data;
+ int err;
BUG_ON(!irqs_disabled());
load_cr3(swapper_pg_dir);
+ err = device_power_down(PMSG_SUSPEND);
+ if (err) {
+ printk(KERN_ERR "xen_suspend: device_power_down failed: %d\n",
+ err);
+ return err;
+ }
+
xen_mm_pin_all();
gnttab_suspend();
- xen_time_suspend();
xen_pre_suspend();
/*
@@ -52,10 +59,11 @@ static int xen_suspend(void *data)
*cancelled = HYPERVISOR_suspend(virt_to_mfn(xen_start_info));
xen_post_suspend(*cancelled);
- xen_time_resume();
gnttab_resume();
xen_mm_unpin_all();
+ device_power_up();
+
if (!*cancelled) {
xen_irq_resume();
xen_console_resume();
@@ -105,7 +113,8 @@ static void do_suspend(void)
device_resume();
-
+ /* Make sure timer events get retriggered on all CPUs */
+ clock_was_set();
out:
#ifdef CONFIG_PREEMPT
thaw_processes();
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index 5d7a6db54a8c..a706d6a78960 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -11,7 +11,4 @@ void xen_post_suspend(int suspend_cancelled);
void xen_mm_pin_all(void);
void xen_mm_unpin_all(void);
-void xen_time_suspend(void);
-void xen_time_resume(void);
-
#endif /* INCLUDE_XEN_OPS_H */